Could someone help me calculate IVF due date?

[PSL1990]

Sorry to post this here but I need IVF knowledge if anyone could help.

I had a 5 day blasto transferred on July 2 and got a BFP. What should my due date be?

The reason I ask is because I'm measuring significantly ahead but I think my due date might be wrong. It seems unlikely the NHS would get the due date wrong but they have told me it's March 24th. Can anyone confirm this/how it should be calculated?

Thanks v much!

Congratulations!

My due dates for IVF were always very out. Especially if taking suppression medication to coast you until a slot become available to start injections.

The dating scan was the most accurate for my pregnancies. I think that was at around 17 weeks.

My calculations make you due around the19th March 2020. It sounds as though they've calculated your date from embryo transfer and not conception.

@thecalmorchid thank you! That's what I make it too! I should have added - this was a natural FET with no drugs/hormones.

The nhs got my due date wrong. To get it right you have put in a date for your last period 14 days before egg collection. The due date is based on a cycle of 28 days with ov on day 14 so that's how you fake it.

Hi OP

Congratulations!

It is very confusing to work out I tried doing it for a family member. The hospital worked it out for their ivf (short protocol 2 day transfer) a week behind from egg collection date. Instead of the last date of period as would normally be the case. Their babybarrived 5 days after the due date.

I came across a couple of websites that have ivf calculators though couldn't find a UK one.

This One is worked out from egg collection
And was In line with what the due date the hospital said

www.yourivfjourney.com/baby-calculators-for-pregnancy/ivf-and-fet-due-date-calculator/

This one is by transfer date

flo.health/tools/ivf-due-date-calculator

Hopefully they help

I had 5 day July 12 and preg and was due 31 March but was induced

So if you are 10 days ahead of me - I would say 21 March

When do they say ?